Wheel puller



Patented Jane 29, 1926.

UNITED s;re*I-esv PERCY c. Gnovnn, or BIRMINGHAM, ALABAMA..

WHEEL FULLER.

Application liled October 16, 195125:. Serial No. 743,865.

My invention7 relates to a device for pulling wheels and the like fromvtheir aXle or shaft supports, and is more particularly intended to improve,` and perfect the lpulling device which forms the subject matter of my pending application No. 671,276.

In the actual use of my application as embodied. in my application aforesaid, it was found desirable not to have the threads in the hub engaging caps to fit too closely on the threads on the h ub as the latter'y were oftenV worn o r somewhat deformed, but when the cap threads were ldesigned for a loose fit it was found that if the wheel was stuck tight the threads would often strip;

The chief robject of my present invention is to provide the threaded puller elements which engage the wheel hub so designed that they will iit loosely onV the threaded hubs and can thus be easily run on notwithstanding much wear and defacement of the hub threads, suc-h threaded elements being made contractable and so arranged `in relation to the pulling device that as the pull is applied they are contracted and Vcaused to bind the more tightly the greater the pull.

Miy invention contemplates broadly the provision of a holder for interchangeable split screw rings which are adapted to engage the wheel hubs, said rings and their holder having'coacting wedge faces which will compress the rings as the pull, iseX- erted.

It is a further distinctive feature` of my invention that in providing the split threadv ed rings of different internal diameter but of. constant externalV diameter I can very cheaply provide the necessary interchangeable parts to adapt the appliance of all orV dinary sized wheel hubs.

lily invention further comprises the novel details of construction and arrangements of pai'ts,`which intheir preferred embodiment onlyY are illustrated in the accompanying. drawings which forni a part of. this specifi# cation, and in which:- l

1 illustrates my invention in vertical crossfsectidnf in. the act of pulling a wheel, also shown in cross section its axle which is shown in elevation.

Fig. 2 is an end view of the assembled device.

Figs'3, 4, 5 and 6 are detail views respectively of the nut in cross section, the interchangeable split ring screw in cross section andfront elevation, and the screw retainer inside elevation .Similar reference numerals refer to siniilahr part-s throughout the drawings.

ln the embodiment of my invention illustrated, I show the device as adapted more particularly for the pulling of wheels from. their axles, though it is to be understood that my invention contemplates the adaptation of its parts to the` pulling of any element from the support on which it is mounted. I show' a wheel 1 having a hub 2`with a threaded outer end 3 which receives the hub :ap not shown. The hub is mounted fastl on a, taper axle el. which at its outer endv is reducedl and threaded to receive the hub retaining' nuts which are not shown. The partsas thus far described aretypical-of any I wheel.

The puller mechanism proper comprises a sleeve having an internal threaded portion (l of constant diameter extending inwardly to abevelled annular shoulder 7 of reduced diameterformed on the end of the sleeve which is disposed toward'the work. The

-sleeve is knurled orprovided with Spanner wrench holes vSvvf'hich are typical of any tool grip.A l mount Vinthe sleeve an interchangeable andV replz/iceable screw ring 9 which has a taper,` face 10 corresponding to the taper of the shoulder 7 and adapted toplace byA a heavvl retainerI ring; 13, which is screwed down intothe sleeve by engagement with the threads e' therein. This ring 13 has a center hole 1d whichk merges. atlitsginner endY into an offset recess` 15f and I insert through the hole 14 a plunger guide 16 hav# ing at its inner end a flange 17 fitting flush into the recess 15 in the ring 13. The plunger guide projects substantially beyond theA ring 13 and has a bore 18 opening throughy its innerV end and opposite 'side slots 19 through which. a wedge 20 is adapted to be Y so that the Wedge Ais driven through the,

driven. The nontapering edge oli the Wedge is adapted to seat anfainst the outer end ot the guide which provides a flat Wedge seat extending the Jiill diameterl otthe guider The inner tapering edge ofthe Wedge is adapted to engage the onter hevelled end of a plunger 2l which when torced inwardly by the .rer e Will engage the end of the arde forced outwardly plunger guide7 the latter i and esrrying` with itrthe ring` i3, theV nut 5 the sereiv ring 9 and thisL pulling oli the Wheel. 'It V is Vimportant to note that the .Soren ringi El is threaded to torni a loose :free lit on the threaded entL 3 of the hnb so that it can be applied notwithstanding oonsiderable weer or deformation on the hub threads. However, as the pull begins to take etieet,k the ivedging action betiveen the surfaces 'T and l0 acts to Contract the split ring 9, causing it to bind more and more tightly in its threaded engagement on the hub and thus providing a grip oi increasing' power proportioned to the resistance oic the Wheel to being pulled off. The light, relatively ineXL pensive.r split ring` 9 can be interehanged to lit the device to the desired Werl; The 'inll bearing` given the non-taper 'face ogtu the ifi-*edge and the point bearing' between the taper tace of the Wedge and the plunger is a nieresatistaetory arrangement than in iny earlier application, as there will be no tendeney to ooelz the plunger and l obtain'a fall .searing for the Wedge Where it aets the plunger guide.

To prevent the sorewrii'ig rotating in the sleeve l provide a. set soreiv or like element 22 which will lit looselyin the slot in the threaded ring so as to prevent its rotation While permitting snilioient contraction to alloiv it to grip the vWork responsive to the eo action oi: the wedge faces. ln this Way the Wrench or tool eanbe applied to the sleeve for screwing the assembled device to the l claim as nen7 and desire to secure by Letters Patent, is:-

l'. In a device of the eiiaraeter desoriljied.`r a sleeve having threads at one end and an support Al'or tl e Work and said Wedge being adapted to act between the element and the wort: support so that when driven in it will not act simultaneously tojar the Work ii'rorn its support and to increase the compres sion of said threaded ring. i y

A d *ice as described in olain'i l, in which a loose plunger is interposed between the wedge and the worksnrfaee so as to i 3. ln a device of the character described, a sleeve havingan internal bevelled face near one end, a split ring` internally threaded and adaptet. to soreiv on the Work and hava hevelled i'aee adapted to engage said bevelled seat? in ans soreived into said sleeve carrying; a plnnger'rnovable in line with the axis of the sleeve and adapted to engage the Work, and a transversely movable Wedge in the sleeve with an end exposed to permit it to be driven in by impact to force said plunto its Work simultaneously to contract the split ring` as the device is forced away troni the Work. i f

ln a de y'ioe of the character described, a sleeve having an internal bevelled tace nea-r one end, a split ring' internally threaded and adapted to sirew on the-Work and having a bevellod faee adapted to engage said bevelled seat, n'ieans soreived into said sleeve Carrying aplunger movable in line with. the aXisof the 'sleeve and adapted to engage the vrorl, and a transversely movable nf'edge in the sleevevith an end exposed to permit it to be driven in by impact to force said plunger to its Work and simultaneously to contract the split ring as the device is forced aivay from the ivorlt, said element comprising an esterna ly threaded portion adapted to be screwed into the sleeve so as to apply initial eonipression on the split ring to force itV into tlireaded engagement Wit-h the W rk, the espanded split ring having a slightly larger diameter than that which would be standard for threaded engagement with the Work,

in testimony whereof l atiix iny signature.

,PERGY e stoves,

GERTIFICTE 0F CGRRECTION.

Patent No. 1,590,973.

PERCY C. GROVER.

it is hcreby certiiie that error appears in the printed speciicationoi the above, numbered panini requiring correction as follows: Page 2, line 71, claim i, strike out the word "'no; and that thek said Leiters Patent should be read Granted June 29, 1926, 'to

with this correction therein that the same may conform to the record of tho oaseA in the Pateni; Office.

Signed ami seaid this (sich day of. October, A. D. 1931.

M. J. Moore,

(Seal) Acting Commissioner of Patents.- 

